Re: Porting Winsock DHCP Server; is OS/X ignoring Broadcast UDP in recvall()?

• Subject: Re: Porting Winsock DHCP Server; is OS/X ignoring Broadcast UDP in recvall()?
• From: Peter Sichel <email@hidden>
• Date: Fri, 1 Feb 2008 19:26:57 -0500
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Feb 1, 2008, at 5:46 PM, Hostile Fork wrote:

Though I'll need to figure out a good cross-platform way to get the
hardware ethernet address from pcap's device handle.  I suppose I
could send my own IP address a packet, capture it, and then read the
data out of the header...but that seems roundabout!  Better ideas
appreciated...

I'm not too clear about cross platform mechanisms since
this is basically a function of the driver at the data link
layer.

In most UNIX systems, you can use Sysctl to get the
NET_RT_IFLIST and read it from there as described
in Stevens "UNIX Network Programming"

  CTL_NET.AF_ROUTE.0.AF_INET.NET_RT_IFLIST.0

This might at least cover other UNIX like systems
(versus the System Configuration Framework
which is Mac OS X only).

- Peter

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